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Finding the Fourth Proportional to 163,672.80, 245,665.80 and 84,843.60

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Solution

The fourth proportional to 163,672.80, 245,665.80 and 84,843.60 is: 127,346.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,672.80 : 245,665.80 = 84,843.60 : x
  2. Step 2: Convert to fraction form
    163,672.80/245,665.80 = 84,843.60/x
  3. Step 3: Cross multiply
    163,672.80x = 245,665.80 × 84,843.60
  4. Step 4: Simplify right side
    163,672.80x = 20,843,170,868.88
  5. Step 5: Solve for x
    x = 20,843,170,868.88/163,672.80
  6. Step 6: Final answer
    x = 127,346.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.